Addiction is defined as a chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences. â  It is considered a brain disease because drugs change the brainâthey change its structure and how it works.ource: From the laboratories of Drs. N. Volkow and H. Schelbert. Addiction is a lot like other diseases, such as heart disease. Both disrupt the normal, healthy functioning of the underlying organ, have serious harmful consequences, and are preventable and treatable, but if left untreated, can last a lifetime.
there is a dog from Africa called a Basenji, it doesn't bark, it sorta yodels. and also the visila from south America is said not to bark Please don't listen to all of the smart arses. Deaf dogs bark very little. But all dogs bark.
Why a dog growls depends on the dog and the situation, but it is usually associated with aggression. There are different types of aggression. A dog may growl when he is scared (e.g. fear-aggression) or because he is asserting his status as the alpha dog (dominance aggression).On his own property, he may growl to protect his turf from encroachment (territorial aggression) or to guard some valued resource (food or toys). dog may growl when he is scared (e.g. fear-aggression) or because he is asserting his status as the alpha dog (dominance aggression). On his own property, he may growl to protect his turf from encroachment (territorial aggression) or to guard some valued resource (food or toys).